"Motion Sensor"

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Howto & Style

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• flip-flop

[kramray]

JK Flip Flops

[ProfFEricK]

@kramray ehm.. it is not a 74LS92 (divide by twelve counter), but just a logic gate (forgot which) rigged as a flip flop circuit

[magnumpro1]

and only living organic material

as merlinelectron sayd it works on the electricity of a human

[ProfFEricK]

Interesting idea. I may try that when I have time. But merlinelectron said it is the static, not body pick-up, so which one is it?

[AssemblerAVR]

What IC you use???

[ProfFEricK]

I am sorry that I am not sure (this video was made 3 years ago), I think it should be a 7473. The 3 ICs appears in the video are 7400, 7404 and 7473, so it must be one of them. I hope this answers your question.

[merlinelectron]

Great. But you do know that its just static electricity from your hand. tie the input low or high with 10K (dont know which chip your using) and you shouldn"t get it.

[francisroan]

it must not be called motion sensor but touch switch~!!!!!!!!!!!!!

[techgeek1398]

Its not a motion sensor its a touch sensitive alarm

[Daftronic]

@CognitiveNetwork Yes it is a good idea, I m going to think about it. You re right, Math and algorythms are very important for any one who want to be a designer. In what you want to do, I think you will have to get several knowledges in programming but if you like it no problem you will success!

[CognitiveNetwork]

@Daftronic That sounds great. But I would reccomend Norway or Switzerland as these countries have the highest income for engineers. I'm hoping to study advanced robotics and artificial intelligence, but I want to focus on math, java, algorythms and computer structure while I work for a while after my bachelor degree.

[Daftronic]

@CognitiveNetwork I had my Master of science In microelectronic system there is fours months ago, In september, I m a beginner electronic Engineer, specialised in embedded systems. I m living in France and i made my studies in france but now i m trying to find a job out of this country. I think Canada, Japon or US will be a good opportunity to develop more and more experiences.

[CognitiveNetwork]

@Daftronic I'm saving this as a doc :)

[CognitiveNetwork]

@Daftronic I'm just curious, because you seem to have a wide range of knowledge in the field of electrical engineering. Are you working or a student as well? I'm just a bachelor student in mechatronics, doing my third last semester (seems like for ever).

How many years of working experience do you have? I really like your profile. I subscribed. I went the course of taking a 3 year college degree in technical design, wish I went electronics instead...

[Daftronic]

@Daftronic Analogue sytems are not very reliable over time, they have many non-linearities defaults, It s is a risk to design an analog system that will be used for example in an airplane, can you imagine if there is a failure life of millions of people are in danger, control the devices by software become so important to ensure safety

[Daftronic]

@CognitiveNetwork Yes, In most of cases, you have to use hardware component, just hardware, transistor will be used with a processor just to detect signals, after detection the code who is implemented inside processors will do the rest of job, it remplace hardware that you would have required if you wanted to design your system with only analog components, as i said before, purpose is not only to make work your circuit but above make it work with a minimum cost and a maximum perform

[CognitiveNetwork]

@Daftronic When using Java programming language, which type is used (when programming 1 foot tall humanoid robots). Is it object oriented programming or is it... the other one, the one which uses math, numbers in matrixes, numerical I supose? I'm not gonna say algorythm, because that's more towards C I supose.

[CognitiveNetwork]

@Daftronic Well, 2 transistors is enough. One in the IR receiver circuit and one in the switch circuit. Just use the output signal from the operational amplifier to turn on/off the two motors. But I must ask, if the robot uses a simple processor, it still needs the transistor in the IR motion detector, right?